feat: bills expense type filter (backend join + frontend Select), sync stub docs

apps/server/src/bills/bills.controller.ts

@@ -77,12 +77,12 @@ export class BillsController {
     @Query('periodEnd') periodEnd?: string,
     @Query('studentId') studentId?: string,
     @Query('status') status?: string,
+    @Query('expenseType') expenseType?: string,
   ) {
     return this.service.findAll({
-      periodStart,
-      periodEnd,
+      periodStart, periodEnd,
       studentId: studentId ? +studentId : undefined,
-      status,
+      status, expenseType,
     });
   }
 

apps/server/src/bills/bills.service.ts

@@ -227,6 +227,7 @@ export class BillsService {
     periodEnd?: string;
     studentId?: number;
     status?: string;
+    expenseType?: string;
   }) {
     const scopeIds = await this.scope.getScopeDepartmentIds();
     const qb = this.billRepo
@@ -238,6 +239,9 @@ export class BillsService {
     if (query?.periodEnd) qb.andWhere('b.periodEnd = :pe', { pe: query.periodEnd });
     if (query?.studentId) qb.andWhere('b.studentId = :sid', { sid: query.studentId });
     if (query?.status) qb.andWhere('b.status = :status', { status: query.status });
+    if (query?.expenseType) {
+      qb.innerJoin('b.items', 'bi', 'bi.expenseType = :et', { et: query.expenseType });
+    }
     const bills = await qb.getMany();
     return this.attachDepositInfo(bills);
   }

apps/server/src/sync/sync.service.ts

@@ -157,10 +157,11 @@ export class SyncService {
       this.logger.warn('DingTalk not configured (DINGTALK_APP_KEY missing), skipping sync');
       return 0;
     }
-
-    this.logger.warn(
-      'DingTalk integration service not yet implemented — add DingTalkService to SyncModule to enable real sync',
-    );
+    // 接入指引：
+    // 1. 创建 apps/server/src/integration/dingtalk.service.ts，实现 fetchDepartments()/fetchUsers()
+    // 2. 在 SyncModule 中注入 DingTalkService
+    // 3. 取消以下注释并调用 this.dingTalkService.fetchDepartments()
+    this.logger.warn('DingTalk sync stub: create DingTalkService in src/integration/ to enable real sync');
     return 0;
   }